golang square

package main

import (
    "fmt"
)

func square(x int) int {
    return x * x
}

func main() {
    num := 5
    result := square(num)
    fmt.Println("The square of", num, "is", result)
}

1. Package Declaration: The code begins with the package main statement, indicating that this Go file belongs to the main package.

2. Imports: The code imports the fmt package, which provides functions for formatting and printing output.

3. square Function: It defines a function named square that takes an integer x as a parameter and returns an integer, which is the square of x. It multiplies x by itself and returns the result.

4. main Function: This is the entry point of the program. Inside main, a variable num is initialized with the value 5.

5. result Variable: It calls the square function, passing num as an argument, and assigns the result to the result variable.

6. Printing Result: Using fmt.Println, it outputs a message stating "The square of" the value in num, along with the actual num value and the result obtained from the square function.